Volvo prop removal again

[Eddie Ray]

1985 aq125a. 270outdrive
Trying to remove the prop. Cone is off, prop will not come off? Dose the part with the threads on it need to come off? Looks like it is keeping the prop from coming off. If I pry on the prop a little it moves up some. A quarter of an inch or more. Just seems like that center threaded part is keeping it on.
Sorry if this sounds stupid. Just driving me crazy. Seems like it should come off,it's moving a good bit.
Might I need to just cut it off?
Thanks for any help
Eddie

 

[Eddie Ray]

Long shaft or short?

Long shaft or short?

Volvo prop ,number is 814612. Is this a short or long shaft? I need a new one and want to get the right one.
Thanks
Eddie

 

[billbayliner]

Re: Volvo prop removal again

Eddie, it's easy to get confused on these.
There is no long or short shaft when the correct spacer/line cutter is used for the drive.
Each prop shaft [250/270/275..... and 280/285/290/SP etc] all net the same shaft length when the correct spacer is used.
250/270/275 all use the short spacer.
280/285/290/SP etc all use the long spacer.
The 250/270 shafts are not threaded for the cone nut locking bolt, so you are limited to the short hub props.
If your 1985 is a 270, and if you used a long hub prop, you'd have to use the rear part of the two pc cone nut, and tie wire it somehow.
If it's a 275, it will be threaded and rear part of the two pc cone nut center locking bolt can be used.

 

[PiratePast40]

Re: Volvo prop removal again

There is no long or short shaft when the correct spacer/line cutter is used for the drive.
Each prop shaft [250/270/275..... and 280/285/290/SP etc] all net the same shaft length when the correct spacer is used.
250/270/275 all use the short spacer.
280/285/290/SP etc all use the long spacer.
The 250/270 shafts are not threaded for the cone nut locking bolt, so you are limited to the short hub props.
If your 1985 is a 270, and if you used a long hub prop, you'd have to use the rear part of the two pc cone nut, and tie wire it somehow.
If it's a 275, it will be threaded and rear part of the two pc cone nut center locking bolt can be used.

That's true as long as we're talking about later model drives. Some early AQ280 outdrives were the short shaft, did not use a spacer, and did not have a threaded shaft for the cone nut bolt. The only prop that will fit those drives is the short hub prop.

 

[billbayliner]

Re: Volvo prop removal again

If by later you mean the SX and SX M drives or so, then I don't know. Eddie is asking about an early 1985 drive.

Here is a long hub prop with the correct spacer and the rear most part of the 2 pc spinner.
This works with either 250/270/275 or the 280/285/290/SP when the correct length spacer is used.
The catch is, there are no threads in the 250/270 for the locking bolt.

At the bottom of this Michigan Wheel web page it shows the two prop shaft lengths.
http://www.a1discountprop.com/michiganvolvo.htm
The language is confusing when they refer to short shaft/long shaft without explaining the role of the spacer.
With the right spacer, the net length is the same. Now the prop hub length is the only issue.


Baring the HP drives that volvo messed with early on, I think that all 280s would use the same length prop shaft and long spacer.
I've not heard of a standard 280 drive that did not use the spacer or one that had a short shaft.
Since the spacer stops against the shoulder on the shaft, the spacer is what the prop hub thrusts against.
What would the prop stop against if the spacer was not used?

You may know of a 280 that is unusual. I don't know.

 

[dennis461]

Re: Volvo prop removal again

1985 aq125a. 270outdrive
Trying to remove the prop. Cone is off, prop will not come off? Dose the part with the threads on it need to come off? Looks like it is keeping the prop from coming off. ...Eddie

Oh-oh.
The cone is two pieces press fit together, did it come apart on you?
The cone UNSCREWS from the shaft.
Did you pry it straight off and break it!

 

[PiratePast40]

Re: Volvo prop removal again

You may know of a 280 that is unusual. I don't know.

My 280 is mated to an AQ130D 4 cylinder enging and the boat is a 1976 so I suspect this is one of the earlier 280 drives. By spacer, I'm talking about the spacer that sits just before the cone nut. The line cutter is installed as usual.


We're probably getting away from the OP's question, and for a 1985 drive, you're most likely correct. Wanted to point out that there were some early drives that don't have the later dimenstions. I went through quite a bit of frustration until I figured out that my 280 drive was an earlier version with the short shaft and the shaft was not drilled to accept a bolt to hold the cone nut in place. The manual even talks about drilling and tapping the shaft to accept the bolt. When purchasing a replacement prop, I initially ordered the "long hub" version thinking that either would fit. Didn't want others to fall into the same situation.

 

[billbayliner]

Re: Volvo prop removal again

I see! Looks like we were talking about two different pieces. Sorry about that!

Item "C" of the 2 pc spinner is a "spacer-washer" and is not threaded!
It is also indexed to the rear section, so removing the rear section would certainly free up this section.
I doubt that this is Eddie's problem.

The first 280's appeared in around 76 or 77 I think.
These should all be the same shaft length, but I believe that the first ones were not threaded for the keeper bolt.


Something else that we wont commonly see, is the 280 exhaust outlet flapper like you have on your lower unit.
This was a production item only and could not be bought over the counter. It's rare to see one these days.

Edit;
You got me thinking about this odd length 280 single prop shaft, so I fired this question to my friend who has been doing the AQ series stuff for 22-23 years or so.
He went back as far as his info would take him.

Copy/paste:
Bill, it's possible that one of the early non-standard higher performance drives used a different length shaft, but I've not seen this.
You got my curiosity up, so I did a quick search.

From what I can tell, the AQ200B and AQ225B through the AQ260D, AQ290A, AQ120B, AQ125A, AQ140A, AQ145A, AQ145B AQ171A, AQ171C, AQ175A (with the 280 drive) right on up to the AQ271A, AQ271B, AQ271C, AQ271D, 500A, 501A, 571A, (with the 290) and the 430A, 430B, 431A, 431B, 432A, 434A, 500B, 501B, 570A, 572A, group with the SP through the SP-C drives.... all use the prop shaft p/n 875524, or replaced with 854675.
I even looked at the AQ165A, AQ170A, AQ170B, AQ170C, with the 280T drive.
Same prop shaft p/n, so the length would appear to be the same between all of these.
This shaft requires the long spacer-line cutter.